Giving that it's next to 2 vacant properties and is in a B area of rent value (Imo) anyway the property's has reduced to 30k and it's still on the market I was considering making a low ball offer of 15-18k  .

Agree with @Brent Coombs and @Joe Villeneuve, easy to manipulate those numbers and those rules are really just a for a fast analysis of a property. you are better off doing your due diligence and running all your numbers. after researching the area market and running the numbers, the main area i like to focus on is the COC return. the COC will tell you how much you will earn based on how much you invest in the property, just like any other investment vehicle out there but with Real Estate you can earn money in different ways, not just not like an interest bearing account or stock market where you hope the stock will rise in value.

Reduce or eliminate the compound interest or the amount of time you have to pay it and attack principal in large chunks.

They might offer to give you the property, ask you to reduce the payback amount, or decide to just walk away, which means you may have to take the property back.Mortgagor Problems: They could suffer from a lost job, a divorce, addictions, illness that piles up medical bills, and other personal adversity that stops payments to you.

I hate sounding like the old uncle and have failed 4 diplomacy courses, but, if you are asking whether to hire an appraiser or an inspector; please do a lot more reading/studying before you spend your hard earned money.

From a pricing perspective, xx95 always sounds better than xx00.It is easier to reduce the price over time, but nearly impossible to increase it.

The tenants are paying your debt while the property is appreciating and the principle is being reduced.  

There legal basis is greatly reduced through proper disclosures contained in a properly drawn PPM.

In return, I've agreed to let the former owner continue to stay in the house at a reduced market rate rent for 3 years. 

Will our consideration and amount increase if we wait to apply for it after reducing our debt load some or does it mostly depend on the value of our home vs what is owed?